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The 1,4-butane diammonium (putrescine) ion co-crystalizes with propanedioic acid (malonic acid) monoanions in space group Pcab (1,4-butane diammonium hydrogen propanedioate, (C4H14N2)2+.2(C3H3O4)-). One of the carboxylate moieties of malonic acid is protonated. The asymmetric unit of the crystal contains one molecule of malonic acid and half a molecule of putrescine. All three H atoms of the putrescine amino groups participate in hydrogen bonding.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks polyamine, global

fcf

Structure factor file (CIF format)
Contains datablock mal

CCDC reference: 128520

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